Quote:
Originally Posted by Tony_
I image at 2300mm - very difficult. Without guiding I'm lucky to get 30 sec exposures without the PE elongating the stars. The all star polar alignment seems quite good - sometimes I get virtually zero drift over a few hours.
Guiding is hit and miss - sometimes I can get round stars with 4 minute exposures (and probably more) - other times I get worse drift than if I don't guide. Possibly due to differential flexure or mechanical backlash.
Also since I got a cooled 40d camera I think I am pushing the weight limit once I piggyback an 80mm on my 9.25 SCT, with the camera on the 80mm. This will be improved with a well balance mount and maybe some improvements to the gear meshing and bearings.
It might be clear later tonight - I hope your mount shows some improvements.
Regards,
Tony.
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Gave the mount a try tonight, and managed to iron out a few more bugs and tweak the worm mesh. Hopefully tomorrow I can get some proper results - before adjustment I was noticing very strange behaviour, and PE of 100+
needless to say PHD couldnt cope
This is all part of the hypertune process - you spend as much time tweaking as the hypertune itself
